Through field investigation and chemical analysis, the reasons why soil ecological environment deteriorated on facility farmland were studied.
采用调查研究与化学分析相结合的方法，对设施农田土壤生态环境恶化的原因进行了初步研究。
Through the investigation, main ecological environment problems were found in Xinmin city, and protect the environment and improve the ecological environment was put forwarded.
通过调查，找出新民市当前主要生态环境问题，提出保护和改善生态环境是当务之急。
Vegetation coverage is an important ecological parameter, possessing important significance to the global environment variation and monitoring investigation.
植被覆盖度是一个十分重要的生态学参数，对于全球环境变化和监测研究具有重要意义。
The third part discusses inheriting, activities and income of theatrical troupes by a tracked investigation, and the fourth part mainly discusses the ecological environment and cultural changes.
本文通过大量的田野调查结合已学过的理论知识、相关成果的研读从现状、生存、戏班传承收入、生态环境、音乐本体等方面对华亭曲子戏作以初步调查与研究。
The investigation performed so as to find out the effect of the covering of plastic film on the growth of sugarcane root system and the ecological environment.
通过旱地冬植和宿根甘蔗的地膜覆盖试验，研究地膜覆盖对土壤生态环境及蔗苗根系生长的影响。
The content of the study was confined in investigation and monitor, planning and design, management and evaluation of agricultural resources and ecological environment.
界定其研究内容：农业资源与生态环境调查监测、农业资源与生态环境规划设计、农业资源与生态环境运营管理及评价。
The content of the study was confined in investigation and monitor, planning and design, management and evaluation of agricultural resources and ecological environment.
界定其研究内容：农业资源与生态环境调查监测、农业资源与生态环境规划设计、农业资源与生态环境运营管理及评价。
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